Same place



(No Model.)

P. MURRAY,'J1.

ROTARY FAN.

Patented Feb. 15, 1887.

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UNITED Sarre PETER MURRAY, JR., OF NEVARK, NEV JERSEY, ASSIGN OR TO THE BACKUS MANUFACTURING COMPANY, OE SAME PLAGE.

ROTARY FAN.

SPECIFICATION forming part of Letters Patent No. 357,731, dated February l5, 1887.

Application filed May 12, 1886. Serial No. 201,932. (No model.)

To @ZZ whom t may concern.-

Be it known that I, PETER MURRAY, Jr., of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Rotary Fans, of which the following is a specification.

This invent-ion relates to rotary column fans of that class which are rotated below a gasolier or eleetrolier, so as to agit-ate the air and reduce the temperature of the store or other room; and the invention consists of the combination of a tubular fan-shaft that is supportedin bearings ofa casing on a fixed column, a fan attached to the upper end of the fanshaft, a driving-shaft also supported in bearings of the casing, a friction-gear for transmitting motion from the driving-shaft to the fan-shaft, and a spiral spring interposed between the casing and a collar on the drivingshaft for keeping the friction-gear in mesh.

The invention consists, further, of certain details of construction, which will be fully described hereinafter, and finally pointed out in the claims.

In the accompanying drawings, Figure 1 represents a central section of my improved rotary column fan. Fig. 2 is a side elevation of the casing within which the driving-gear of the fan is arranged. Fig. 3 is a vertical 3o transverse section of the casing on line .t x,

Fig. 2.

Similar letters of reference indicate corresponding parts.

A in the drawings represents afan, the hub of which is attached to the upper end of a tubular fan-shaft, B, which turns in bearings Z) b of a casing, C, that is supported at the upper end of a column, O', and connected thereto by means of a clampscrew or other device, a,so

4o as to permit the higher or lower adjustment of the casing to the position of the drivingshaft. The casing C is made of sheet or cast metal, or other suitable material, and finished in a suitable ornamental manner.

The casing C is provided at diametricallyopposite points with horizontal bearings b b for the driving-shaft D, which, by the adjustable connection of the casing with the column C', are readily aligned for the driving-shaft. 5o A beveled frictiondisk, d, on the drivingshaft D, transmits rotary motion by a beveled friction-disk, d, to the fan-shaft- B, the disk cl being applied to a sleeve, e, which is splined to the driving-shaft D, while the disk d is attached to the lower end of the tubular fanshaft B. Through the column C and the tubular fan-shaft B extends a pipe or rod, E, of sufficient strength to support above the fan a ygasolier or electrolier, according as gas or electricity is the illuminating medium. The sections of the pipe or rod E, above and below the driving-shaft D, are connected by a circular or oval connecting piece, E', which is clearly shown in Fig. 3, and which supplies the required space for the passage of the driv- 6 5 ing-shaft.,

For rotating or stopping the fan A, the transmitting-disk d is shifted into frietional contact with the disk d', or moved away from the same, which is accomplished bya pinion, e', on a transverse shaft, et, that turns also in bearings of the casing C. To the outer end of the shaft e2 is applied a lever, e3, which is provided with a toothed segment, c", that is en gaged by a springpawl, c5, so as to lock the lever in any position to which it may be set. By moving the lever c toward the right the sleeve e and disk d are moved toward the left and out of mesh with the disk d', and retained in this position by the action of the spring pawl ci. No motion is then transmitted from the driving-shaft to the fan-shaft. By moving the lever e3 toward the left the sleeve e and disk d are moved toward the right, so as to form contact with the disk d and transmitmotion to the fanshait and fan. The contact of the friction-disks d d is kept up by the locking action of the pawl e5 on the toothed segment c4. To prevent the lifting of the fanshaft in the bearings of the casing, the same is pressed down by a spiral spring, f, that is interposed between lthe upper end of the casing G and a collar, f', clamped to the tubular fan-shaft, by which spring the intimate contact of the diction-disks, and consequently the regular motion of the fan, is kept up.

Then the speed of the fan is desired to be increased, the tension of the spring f is increased by shifting the friction-disk d by the lever e3 to such an extent that the friction-disk 10o d is lifted, together with the fan-shaft, against the tension of the spring, whereby the increased resistance of the air on the fan is overcome and slip77 ofthe disks prevented.

This construction of rotary fan is adapted for use in places where no fans can be snspended'from the ceilings, owing to the distance of the same from the floor, in which case the driving mechanism on the fan-shaft and the illuminating-light*are combined and supported by the standard in the nature of a lampfpost.

Having thus described myinvention, Ielaim Vas new'and desire to seeurebyLetters Patentl. The combination oi" a supporting-column having a casing, a fan-shaft turning in bearings of said easing, a fan attached to the upper end of said fan-shaft, a driving shaft below the same, a frictiougear for transmitting motion from the driving-shaft to the fan-shaft, and a spiral spring interposed between the casing and a collar on the ian-shaft, whereby the friction-gears are kept in Contact, substantially as set forth.

2. The combination of a supporting-casing, a fan-shaft, a fan attached to the upper end of said fanshaft, a driving-shaft also supported in bearings of the casing, a friction-disk at the lower end of the fan-shaft, a friction-disk on the drivingshaf't, 'a grooved sleeve splined to the driving-shaft, a pinion meshing with said grooved sleeve, a lever for operating the pinion-shaft, and a locking device for retaining the pinion and disk in position after adjustment, substantially as set forth.

3. The combination of a column, a casing supported at the upper end of said column, a driving-shaft fixed relatively to the casing and supported in bearings of the same, a fanshaft supported in bearings at the upper part of the casing, a friction-gear for transmitting motion from the driving-shaft to the fan-shaft, and mechanism, substantially as described, for adjusting the easing higher or lower, so as to align the bearings of the driving-shaft with the same, substantially as set forth. l

In testimony that l claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

PETER MURRAY, JR.

Vitnesses:

PAUL GOEPEL, SIDNEY MANN. 

